Problem: The nucleus 23092U undergoes α-decay with a half-life of 20.8 days. How many alpha particles are emitted per second by a sample that contains 8.0 g of 23092U?  

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The nucleus 23092U undergoes α-decay with a half-life of 20.8 days. How many alpha particles are emitted per second by a sample that contains 8.0 g of 23092U?

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